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Patented Jan. 16, 1923.

UNITED STATES HERBERT C. HARRISON, OF LOCKPORT, 'NEW' YORK, ASSIGNOR TO HARRISON RADIATOR CORPORATION, A CORPORATION OF NEFJ' YORK.

RADIATOR CORE.

Application led December 3, 1921.

T 0 all whom t may concern:

Be it known that l, HERBERT C. Harmsen, a subject of the King of Great Britain, residing at Lockport, in the county of Niagara and State of New York, have invented certain new and useful Improvements in Radiator Cores; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to radiator constructions, and has for its object to provide a radiator core which will be simple to construct, and more efficient in operation than those heretofore proposed.

With these and other objects in view, the invention consists in the novel parts and combinations of parts constituting the core, all as will be more fully hereinafter disclosed and particularly pointed out in the claims.

This invention is an improvement over my prior Patent No. 1,314,263, dated August 26, 1919, and entitled Radiator constructions.

Referring to the accompanying drawings forming part of `this specification, in which like numerals designate like parts in all the views:

Figure 1 is a sectional view illustrating the air cells and water passages in accordance with the construction disclosed in my said former patent;

Figure 2 is a plan view of one of the unit plates illustrated in my said former patent;

Figure 3 is a sectional view of the parts shown in Figure 2;

Figure 4 is a sectional view similar to Figure 1, but illustrating the present improved construction of radiator units and water passages;

Figure 5 is a plan view of one of the unit plates employed in making the radiator unit of Figure 4;

Figure 6 is a. sectional view of the parts shown in Figure 5; and

Figure T is a conventional view of the radiator in ade in accordance with the present invention.

ln order that this invention may be the better understood and the more easily dis tinguished from the construction of my said former patent, it is said:

In my prior patent above referred to, the radiator unit is composed of a pair of corrugated unit plates 1 and 1 having the Serial No. 519,728.

folded fin portions 2, and the offset edges 3. This said pair of plates are disposed with their lin portions 2 pointing in opposite directions as indicated and are separated by the perforated corrugated division plate 4, as shown, so as to form a double row of air cells 5, while an outer plate 6 of an adjacent unitcontacts with the plate 1 of the said pair of plates to form the zigzag water passage all as is well known.

In other words, the offset edges 3 carried by an outer plate 1 of the one unit Contact along` the zigzag line 15, Fig. 1, with the Oifset edges 8 of the outer plate 6 of an adjacent unit, to form the zigzag water passages 7, as plainly illustrated. It has been found, however, that a straight water passage is much to be desired in radiators of this character, for the efficiency of the radiator as a whole is increased thereby.

lout in order to form the desired straight water passages and still retain the well known hexagonal shape of the air cells which characterize the radiators of my said patent, it is found necessary to omit the said offset edges 3 or 8 from the outer plates forming the radiator units. rllherefore, in carrying out this invention, the thin brass plates 11 and 11 out of which the radiator units are formed, are uniformly corrugated as in my former patent, but without offset ting` their edges at all. That is, said plates are provided with the two sides 9 and 16 of the hexagon, separated by the ridges 17, precisely as is the case in my said former patent, and also with the tin portions lettered 10 in the present invention formed by bending the metal upon itself.

ln other words, so far as is now described, the unit plates of the new invention do not differ from the unit plates of my prior construction except for the omission of the offsetedges 3. But if two contacting unit plates `of different units were brought together without these offset edges, and with no other difference of construction over said prior pat-ent, there would be no water passage formed, for the ridges 1T of the one plate would lit from end to end of the air passages in the depressions between two ridges 1T in another plate, and no space would be left for the water to pass at all. Accordingly, in order to provide the desired straight water passages, l mash down or fiatten down the ridges 17 in my new plates 11 and 11 in a plurality of rows to form a plurality of individual flattened surfaces 13 as plainly shown in Figures 5 and 6. These said flattened surfaces 13 in one unit plate 11, see Figure d, alternate with the flattened surfaces 13 in another unit plate 20 in such a way that a straight water passage 21 is produced.

Stated in other language, a pair of unit plates 11 and 11 are assembled, .in carrying out the present invention, with their hns 10 opposing each other and separated by a division plate Lliprecisely as was done in my said former patent, while an outer unit plate 2() oil an adjacent unit is brought into contact with one of said unit plates 11, so that the short ridge portions 17 of one unit plate 11 will lit into the depressions between a pair of ridge portions 17 in an adjacent unit plate 2O along` the Zigag line 23 formed by the corrugated surfaces 9 and 16, thus l.ausing the rows of flattened surfaces 13 to alternate with each other on said opposing unit plates and to ferm the straight water passage 21.

lt will new be clear that this invention differs from that of my prior patent in that the corrugated surfaces 9 and 16, see Figure 1, are at a plurality of points along their lengths flattened in toward the air cells 5, so that they would occupy the dotted line position 3G in the plate 1 and the dotted line position 31 on the plate G, if said surfaces 13 were provided in the old construction to form the straight water passage shown in Figure 1. But in such case, the offset edges 3 and 3 would cause said passage to be unduly wide; therefore said offset edges are preferably abolished 'in the new construction.

rlhe production of this said straight water passage, 21, in the present invention, produces the following` desirable results:

lt increases the flow of water to the desired volume, and tlierefore the capacity of the radiator. Further, an inspection of Figure 6 will show that the flattened p0rtions 13 extending inward toward the air cells 5 form curved obstructions 25 to the passage of air. which are separated by the wider spaces 26, Aand thus is the air broken up a. balloted across the air passages to a greater degree in its travel through the radiator than is the case when these curved obstructions are not present. The entire radiator core, 2S, when placed in the radiator traine Q9 does not differ in appearance from that of my former patent and is found to possess all of the advantages of said prior core together with :i higher operating elliciency.

llhat is claimed is:

1. The herein described radiator unit comprising outer walls made from single strips of corrugated metal having folded 0ppositely disposed fin members; and ridges between said fin members provided with flattened portions along their length to form one half wall of a straight water passage,

substantially as described.

2. The herein described radiator unit comprising' a division plate and outer walls each composed of a single strip having folded fin members and a pair of corrugated surfaces joined by a ridge member extending frein edge to edge of the strip between each adjacent pair of fins, said ridge members provided with flattened portions adapted to form one wall of a straight water passage and said fins being oppositely disposed and separated by said division plate to forni a double row of air passages, substantially as described.

3. The herein described new radiator core comprising a plurality of radiator units, the outer plates of which are corrugated to form fiat surfaces separated by ridges and bent upon themselves to form fin members constituting, with said flat surfaces, the walls of the air passages, and the said ridges being provided along their lengths with portions flattened in toward said air passages to form straight water passages between adjacent units, substantially as described.

4. A radiator unit comprising a pair of sheet metal plates bent and closed upon themselves to provide oppositely projecting spaced 1in portions whose sides form parallel Vwalls of air passages, said plates being also bent between said fins to provide ridges extending away from said fins and air passages, said ridges being flattened inwardly toward said air passages to forni portions of straight water passages, and a perforated, corrugated division plate located between said first named plates contacting with said fins, substantially as described.

5. A radiator made up of sheet metal plates, bent to form air passages, portions of which are hexagonal in cross section, said plates having distributed along said air passages ilattened portions. and bent upon themselves to form oppositely disposed tins, and said plates being connected in parallel to cause said flattened portions to form st-raigiht water passages. substantially as described.

In testimony whereof .l aiiix my signature.

HERBERT C. l-lARRlSON. 

